Migrate empty_state_view to Jetpack Compose

Author: toliuweijing

app/src/main/java/org/schabi/newpipe/fragments/EmptyFragment.java

@@ -6,9 +6,11 @@
 import android.view.ViewGroup;
 
 import androidx.annotation.Nullable;
+import androidx.compose.ui.platform.ComposeView;
 
 import org.schabi.newpipe.BaseFragment;
 import org.schabi.newpipe.R;
+import org.schabi.newpipe.ui.emptystate.EmptyStateUtil;
 
 public class EmptyFragment extends BaseFragment {
     private static final String SHOW_MESSAGE = "SHOW_MESSAGE";
@@ -26,8 +28,10 @@ public View onCreateView(final LayoutInflater inflater, @Nullable final ViewGrou
                              final Bundle savedInstanceState) {
         final boolean showMessage = getArguments().getBoolean(SHOW_MESSAGE);
         final View view = inflater.inflate(R.layout.fragment_empty, container, false);
-        view.findViewById(R.id.empty_state_view).setVisibility(
-                showMessage ? View.VISIBLE : View.GONE);
+
+        final ComposeView composeView = view.findViewById(R.id.empty_state_view);
+        EmptyStateUtil.setEmptyStateComposable(composeView);
+        composeView.setVisibility(showMessage ? View.VISIBLE : View.GONE);
         return view;
     }
 }

app/src/main/java/org/schabi/newpipe/fragments/list/channel/ChannelFragment.java

@@ -10,7 +10,6 @@
 import android.os.Bundle;
 import android.text.TextUtils;
 import android.util.Log;
-import android.util.TypedValue;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuInflater;
@@ -20,6 +19,7 @@
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.compose.runtime.MutableState;
 import androidx.core.content.ContextCompat;
 import androidx.core.graphics.ColorUtils;
 import androidx.core.view.MenuProvider;
@@ -45,6 +45,9 @@
 import org.schabi.newpipe.ktx.AnimationType;
 import org.schabi.newpipe.local.feed.notifications.NotificationHelper;
 import org.schabi.newpipe.local.subscription.SubscriptionManager;
+import org.schabi.newpipe.ui.emptystate.EmptyStateSpec;
+import org.schabi.newpipe.ui.emptystate.EmptyStateSpecBuilder;
+import org.schabi.newpipe.ui.emptystate.EmptyStateUtil;
 import org.schabi.newpipe.util.ChannelTabHelper;
 import org.schabi.newpipe.util.Constants;
 import org.schabi.newpipe.util.ExtractorHelper;
@@ -102,6 +105,8 @@ public class ChannelFragment extends BaseStateFragment<ChannelInfo>
     private SubscriptionEntity channelSubscription;
     private MenuProvider menuProvider;
 
+    private MutableState<EmptyStateSpec> emptyStateSpec;
+
     public static ChannelFragment getInstance(final int serviceId, final String url,
                                               final String name) {
         final ChannelFragment instance = new ChannelFragment();
@@ -199,6 +204,10 @@ public View onCreateView(@NonNull final LayoutInflater inflater,
     protected void initViews(final View rootView, final Bundle savedInstanceState) {
         super.initViews(rootView, savedInstanceState);
 
+        emptyStateSpec = EmptyStateUtil.mutableStateOf(
+                EmptyStateSpec.Companion.getContentNotSupported());
+        EmptyStateUtil.setEmptyStateComposable(binding.emptyStateView, emptyStateSpec);
+
         tabAdapter = new TabAdapter(getChildFragmentManager());
         binding.viewPager.setAdapter(tabAdapter);
         binding.tabLayout.setupWithViewPager(binding.viewPager);
@@ -645,8 +654,10 @@ private void showContentNotSupportedIfNeeded() {
             return;
         }
 
-        binding.errorContentNotSupported.setVisibility(View.VISIBLE);
-        binding.channelKaomoji.setText("(︶︹︺)");
-        binding.channelKaomoji.setTextSize(TypedValue.COMPLEX_UNIT_SP, 45f);
+        emptyStateSpec.setValue(
+                new EmptyStateSpecBuilder(emptyStateSpec.getValue())
+                        .descriptionVisibility(true)
+                        .build()
+        );
     }
 }

app/src/main/java/org/schabi/newpipe/fragments/list/channel/ChannelTabFragment.java

@@ -26,6 +26,7 @@
 import org.schabi.newpipe.fragments.list.playlist.PlaylistControlViewHolder;
 import org.schabi.newpipe.player.playqueue.ChannelTabPlayQueue;
 import org.schabi.newpipe.player.playqueue.PlayQueue;
+import org.schabi.newpipe.ui.emptystate.EmptyStateUtil;
 import org.schabi.newpipe.util.ChannelTabHelper;
 import org.schabi.newpipe.util.ExtractorHelper;
 import org.schabi.newpipe.util.PlayButtonHelper;
@@ -79,6 +80,12 @@ public View onCreateView(@NonNull final LayoutInflater inflater,
         return inflater.inflate(R.layout.fragment_channel_tab, container, false);
     }
 
+    @Override
+    public void onViewCreated(@NonNull final View rootView, final Bundle savedInstanceState) {
+        super.onViewCreated(rootView, savedInstanceState);
+        EmptyStateUtil.setEmptyStateComposable(rootView.findViewById(R.id.empty_state_view));
+    }
+
     @Override
     public void onDestroyView() {
         super.onDestroyView();

app/src/main/java/org/schabi/newpipe/fragments/list/search/SearchFragment.java

@@ -64,6 +64,8 @@
 import org.schabi.newpipe.ktx.ExceptionUtils;
 import org.schabi.newpipe.local.history.HistoryRecordManager;
 import org.schabi.newpipe.settings.NewPipeSettings;
+import org.schabi.newpipe.ui.emptystate.EmptyStateSpec;
+import org.schabi.newpipe.ui.emptystate.EmptyStateUtil;
 import org.schabi.newpipe.util.Constants;
 import org.schabi.newpipe.util.DeviceUtils;
 import org.schabi.newpipe.util.ExtractorHelper;
@@ -344,6 +346,10 @@ public void onActivityResult(final int requestCode, final int resultCode, final
     protected void initViews(final View rootView, final Bundle savedInstanceState) {
         super.initViews(rootView, savedInstanceState);
 
+        EmptyStateUtil.setEmptyStateComposable(
+                searchBinding.emptyStateView,
+                EmptyStateSpec.Companion.getNoSearchResult());
+
         searchBinding.suggestionsList.setAdapter(suggestionListAdapter);
         // animations are just strange and useless, since the suggestions keep changing too much
         searchBinding.suggestionsList.setItemAnimator(null);

app/src/main/java/org/schabi/newpipe/local/bookmark/BookmarkFragment.java

@@ -38,6 +38,7 @@
 import org.schabi.newpipe.local.holder.RemoteBookmarkPlaylistItemHolder;
 import org.schabi.newpipe.local.playlist.LocalPlaylistManager;
 import org.schabi.newpipe.local.playlist.RemotePlaylistManager;
+import org.schabi.newpipe.ui.emptystate.EmptyStateUtil;
 import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.OnClickGesture;
 import org.schabi.newpipe.util.debounce.DebounceSavable;
@@ -123,6 +124,7 @@ protected void initViews(final View rootView, final Bundle savedInstanceState) {
         super.initViews(rootView, savedInstanceState);
 
         itemListAdapter.setUseItemHandle(true);
+        EmptyStateUtil.setEmptyStateComposable(rootView.findViewById(R.id.empty_state_view));
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/local/feed/FeedFragment.kt

@@ -74,6 +74,7 @@ import org.schabi.newpipe.ktx.slideUp
 import org.schabi.newpipe.local.feed.item.StreamItem
 import org.schabi.newpipe.local.feed.service.FeedLoadService
 import org.schabi.newpipe.local.subscription.SubscriptionManager
+import org.schabi.newpipe.ui.emptystate.setEmptyStateComposable
 import org.schabi.newpipe.util.DeviceUtils
 import org.schabi.newpipe.util.Localization
 import org.schabi.newpipe.util.NavigationHelper
@@ -132,6 +133,7 @@ class FeedFragment : BaseStateFragment<FeedState>() {
     override fun onViewCreated(rootView: View, savedInstanceState: Bundle?) {
         // super.onViewCreated() calls initListeners() which require the binding to be initialized
         _feedBinding = FragmentFeedBinding.bind(rootView)
+        feedBinding.emptyStateView.setEmptyStateComposable()
         super.onViewCreated(rootView, savedInstanceState)
 
         val factory = FeedViewModel.getFactory(requireContext(), groupId)

app/src/main/java/org/schabi/newpipe/local/subscription/SubscriptionFragment.kt

@@ -56,6 +56,7 @@ import org.schabi.newpipe.local.subscription.services.SubscriptionsImportService
 import org.schabi.newpipe.local.subscription.services.SubscriptionsImportService.PREVIOUS_EXPORT_MODE
 import org.schabi.newpipe.streams.io.NoFileManagerSafeGuard
 import org.schabi.newpipe.streams.io.StoredFileHelper
+import org.schabi.newpipe.ui.emptystate.setEmptyStateComposable
 import org.schabi.newpipe.util.NavigationHelper
 import org.schabi.newpipe.util.OnClickGesture
 import org.schabi.newpipe.util.ServiceHelper
@@ -257,6 +258,8 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
         binding.itemsList.adapter = groupAdapter
         binding.itemsList.itemAnimator = null
 
+        binding.emptyStateView.setEmptyStateComposable()
+
         viewModel = ViewModelProvider(this)[SubscriptionViewModel::class.java]
         viewModel.stateLiveData.observe(viewLifecycleOwner) { it?.let(this::handleResult) }
         viewModel.feedGroupsLiveData.observe(viewLifecycleOwner) {

app/src/main/java/org/schabi/newpipe/settings/SelectPlaylistFragment.java

@@ -11,6 +11,7 @@
 import android.widget.TextView;
 
 import androidx.annotation.NonNull;
+import androidx.compose.ui.platform.ComposeView;
 import androidx.fragment.app.DialogFragment;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
@@ -27,6 +28,7 @@
 import org.schabi.newpipe.error.UserAction;
 import org.schabi.newpipe.local.playlist.LocalPlaylistManager;
 import org.schabi.newpipe.local.playlist.RemotePlaylistManager;
+import org.schabi.newpipe.ui.emptystate.EmptyStateUtil;
 import org.schabi.newpipe.util.image.CoilHelper;
 
 import java.util.List;
@@ -40,7 +42,7 @@ public class SelectPlaylistFragment extends DialogFragment {
     private OnSelectedListener onSelectedListener = null;
 
     private ProgressBar progressBar;
-    private TextView emptyView;
+    private ComposeView emptyView;
     private RecyclerView recyclerView;
     private Disposable disposable = null;
 
@@ -62,6 +64,7 @@ public View onCreateView(@NonNull final LayoutInflater inflater, final ViewGroup
         recyclerView = v.findViewById(R.id.items_list);
         emptyView = v.findViewById(R.id.empty_state_view);
 
+        EmptyStateUtil.setEmptyStateText(emptyView, R.string.no_playlist_bookmarked_yet);
         recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
         final SelectPlaylistAdapter playlistAdapter = new SelectPlaylistAdapter();
         recyclerView.setAdapter(playlistAdapter);

app/src/main/java/org/schabi/newpipe/settings/preferencesearch/PreferenceSearchFragment.java

@@ -11,6 +11,8 @@
 import androidx.recyclerview.widget.LinearLayoutManager;
 
 import org.schabi.newpipe.databinding.SettingsPreferencesearchFragmentBinding;
+import org.schabi.newpipe.ui.emptystate.EmptyStateSpec;
+import org.schabi.newpipe.ui.emptystate.EmptyStateUtil;
 
 import java.util.List;
 
@@ -39,6 +41,9 @@ public View onCreateView(
         binding = SettingsPreferencesearchFragmentBinding.inflate(inflater, container, false);
 
         binding.searchResults.setLayoutManager(new LinearLayoutManager(getContext()));
+        EmptyStateUtil.setEmptyStateComposable(
+                binding.emptyStateView,
+                EmptyStateSpec.Companion.getNoSearchMaxSizeResult());
 
         adapter = new PreferenceSearchAdapter();
         adapter.setOnItemClickListener(this::onItemClicked);

app/src/main/java/org/schabi/newpipe/ui/emptystate/EmptyStateComposable.kt

@@ -0,0 +1,168 @@
+package org.schabi.newpipe.ui.emptystate
+
+import android.graphics.Color
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.heightIn
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.LocalContentColor
+import androidx.compose.material3.LocalTextStyle
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import org.schabi.newpipe.R
+import org.schabi.newpipe.ui.theme.AppTheme
+import org.schabi.newpipe.ui.theme.errorHint
+
+@Composable
+fun EmptyStateComposable(
+    spec: EmptyStateSpec,
+    modifier: Modifier = Modifier,
+) = EmptyStateComposable(
+    modifier = spec.modifier(modifier),
+    emojiModifier = spec.emojiModifier(),
+    emojiText = spec.emojiText(),
+    emojiTextStyle = spec.emojiTextStyle(),
+    descriptionModifier = spec.descriptionModifier(),
+    descriptionText = spec.descriptionText(),
+    descriptionTextStyle = spec.descriptionTextStyle(),
+    descriptionTextVisibility = spec.descriptionVisibility(),
+)
+
+@Composable
+private fun EmptyStateComposable(
+    modifier: Modifier,
+    emojiModifier: Modifier,
+    emojiText: String,
+    emojiTextStyle: TextStyle,
+    descriptionModifier: Modifier,
+    descriptionText: String,
+    descriptionTextStyle: TextStyle,
+    descriptionTextVisibility: Boolean,
+) {
+    CompositionLocalProvider(
+        LocalContentColor provides MaterialTheme.colorScheme.errorHint
+    ) {
+        Column(
+            modifier = modifier,
+            horizontalAlignment = Alignment.CenterHorizontally,
+            verticalArrangement = Arrangement.Center
+        ) {
+            Text(
+                modifier = emojiModifier,
+                text = emojiText,
+                style = emojiTextStyle,
+            )
+
+            if (descriptionTextVisibility) {
+                Text(
+                    modifier = descriptionModifier,
+                    text = descriptionText,
+                    style = descriptionTextStyle,
+                )
+            }
+        }
+    }
+}
+
+@Preview(showBackground = true, backgroundColor = Color.WHITE.toLong())
+@Composable
+fun EmptyStateComposableGenericErrorPreview() {
+    AppTheme {
+        EmptyStateComposable(EmptyStateSpec.GenericError)
+    }
+}
+
+@Preview(showBackground = true, backgroundColor = Color.WHITE.toLong())
+@Composable
+fun EmptyStateComposableNoCommentPreview() {
+    AppTheme {
+        EmptyStateComposable(EmptyStateSpec.NoComment)
+    }
+}
+
+data class EmptyStateSpec(
+    val modifier: (Modifier) -> Modifier,
+    val emojiModifier: () -> Modifier,
+    val emojiText: @Composable () -> String,
+    val emojiTextStyle: @Composable () -> TextStyle,
+    val descriptionText: @Composable () -> String,
+    val descriptionModifier: () -> Modifier,
+    val descriptionTextStyle: @Composable () -> TextStyle,
+    val descriptionVisibility: () -> Boolean = { true },
+) {
+
+    companion object {
+
+        val GenericError =
+            EmptyStateSpec(
+                modifier = {
+                    it
+                        .fillMaxWidth()
+                        .heightIn(min = 128.dp)
+                },
+                emojiModifier = { Modifier },
+                emojiText = { "¯\\_(ツ)_/¯" },
+                emojiTextStyle = { MaterialTheme.typography.titleLarge },
+                descriptionModifier = {
+                    Modifier
+                        .padding(top = 6.dp)
+                        .padding(horizontal = 16.dp)
+                },
+                descriptionText = { stringResource(id = R.string.empty_list_subtitle) },
+                descriptionTextStyle = { MaterialTheme.typography.bodyMedium }
+            )
+
+        val NoComment =
+            EmptyStateSpec(
+                modifier = { it.padding(top = 85.dp) },
+                emojiModifier = { Modifier.padding(bottom = 10.dp) },
+                emojiText = { "(╯°-°)╯" },
+                emojiTextStyle = {
+                    LocalTextStyle.current.merge(
+                        fontFamily = FontFamily.Monospace,
+                        fontSize = 35.sp,
+                    )
+                },
+                descriptionModifier = { Modifier },
+                descriptionText = { stringResource(id = R.string.no_comments) },
+                descriptionTextStyle = {
+                    LocalTextStyle.current.merge(fontSize = 24.sp)
+                }
+            )
+
+        val NoSearchResult =
+            NoComment.copy(
+                modifier = { it },
+                emojiText = { "╰(°●°╰)" },
+                descriptionText = { stringResource(id = R.string.search_no_results) }
+            )
+
+        val NoSearchMaxSizeResult =
+            NoSearchResult.copy(
+                modifier = { it.fillMaxSize() },
+            )
+
+        val ContentNotSupported =
+            NoComment.copy(
+                modifier = { it.padding(top = 90.dp) },
+                emojiText = { "(︶︹︺)" },
+                emojiTextStyle = { LocalTextStyle.current.merge(fontSize = 45.sp) },
+                descriptionModifier = { Modifier.padding(top = 20.dp) },
+                descriptionText = { stringResource(id = R.string.content_not_supported) },
+                descriptionTextStyle = { LocalTextStyle.current.merge(fontSize = 15.sp) },
+                descriptionVisibility = { false },
+            )
+    }
+}